On the 2014 Honda Pilot, when there is oil getting into the spark plug tubes, this is more commonly due to worn spark plug tube seals. These are “donut” type seals that fit onto the top on the spark plug tubes. They are located under the valve covers. Most better quality valve cover sets will include these seals with the set. The brand name “Felpro” in part number: VS 50773 R will contain the valve cover gaskets and seals, which will be all you need to solve this issue. To replace, remove the valve cover and pry the tube seal from the spark plug tube. Install the new tube seal and then install the valve cover.
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